Rheumatoid arthritis is an autoimmune disease that causes inflammation of the joints and surrounding tissues. It affects around 1% of adults and is more common in women. The prevalence and incidence increases with age, peaking between 40-60 years old. Symptoms include morning stiffness, arthritis in 3 or more joints including the hands, and symmetric joint involvement. Lupus is an autoimmune disease that causes inflammation in tissues throughout the body including the skin, heart, lungs, and kidneys. Seronegative spondyloarthropathies are a group of related disorders including Reiter's syndrome, ankylosing spondylitis, psoriatic arthritis, and arthritis associated with inflammatory bowel disease. They